Finding the Fourth Proportional to 257,914.73, 386,695.64 and 131,309.99
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Solution
The fourth proportional to 257,914.73, 386,695.64 and 131,309.99 is: 196,875.15
Step by Step Solution
- Step 1: Write the proportion equation
257,914.73 : 386,695.64 = 131,309.99 : x - Step 2: Convert to fraction form
257,914.73/386,695.64 = 131,309.99/x - Step 3: Cross multiply
257,914.73x = 386,695.64 × 131,309.99 - Step 4: Simplify right side
257,914.73x = 50,776,999,964.89 - Step 5: Solve for x
x = 50,776,999,964.89/257,914.73 - Step 6: Final answer
x = 196,875.15
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.